<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <button id="btn">请求数据</button>
  <ul id="ul"></ul>

  <script>
    let btn = document.getElementById('btn')
    let ul = document.getElementById('ul')

    // ajax
    function getData() {
        return new Promise((resolve =>{
      let xhr = new XMLHttpRequest();
      xhr.open('GET', 'https://mock.mengxuegu.com/mock/65a91543c4cd67421b34c898/movie/movieList', true)
      xhr.open('GET',url,true);
      xhr.send();
      xhr.onreadystatechange = function() {
        if (xhr.readyState === 4 && xhr.status === 200) {
        //   console.log(JSON.parse(xhr.responseText));
        //   const movieList = JSON.parse(xhr.responseText).movieList
        //   renderLi(movieList)
        resolve(xhr.responseText)
        }
      }
    }))
    }

    function renderLi(arr) {
      arr.forEach(item => {
        let li = document.createElement('li');
        li.innerText = item.nm
        ul.appendChild(li);
      });
    }
   
    btn.addEventListener("click", () => {
    //   getData('https://mock.mengxuegu.com/mock/65a91543c4cd67421b34c898/movie/movieList')
    //   .then((res) => {
    //     console.log(JSON.parse(res));
    //     renderLi(JSON.parse(res).movieList)
    //   })

    fetch('https://mock.mengxuegu.com/mock/65a91543c4cd67421b34c898/movie/movieList')
        .then(data => {
            return data.json()
        })
        .then(res => {
            console.log(res);
        })

    })
  </script>

</body>
</html>